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1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// <chrono>10 11// duration12 13// template <class Rep2, class Period2>14//   duration(const duration<Rep2, Period2>& d);15 16//  conversions from integral to floating point durations allowed17 18#include <chrono>19#include <cassert>20#include <ratio>21 22#include "test_macros.h"23 24int main(int, char**)25{26    {27    std::chrono::duration<int> i(3);28    std::chrono::duration<double, std::milli> d = i;29    assert(d.count() == 3000);30    }31#if TEST_STD_VER >= 1132    {33    constexpr std::chrono::duration<int> i(3);34    constexpr std::chrono::duration<double, std::milli> d = i;35    static_assert(d.count() == 3000, "");36    }37#endif38 39  return 0;40}41